1. Tardigrade
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  3. Chemistry
  4. Graphite is a soft solid lubricant extremely difficult to melt. The reason for this anomalous behaviour is that graphite :

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Q. Graphite is a soft solid lubricant extremely difficult to melt. The reason for this anomalous behaviour is that graphite :

AIEEEAIEEE 2003The p-Block Elements

Solution:

C-atoms form covalently bonded plates (layers). Layers are bonded weakly together, that's why one layer can slide over other cause lubricacy. Cannot be melted easily as large number of atoms being bonded strongly in the laver form big entity